QQuestion
Given below are organic compounds labelled A to F. Answer the questions that follow:
(a) Which compound forms a single product with bromine?
(b) Which two compounds have the same molecular formula?
(c) Which two compounds will react together in the presence of concentrated H2SO4 to form a product with a fruity smell?
✓Answer
(a) C
(b) D and F
(c) A and B
Explanation:
(a) C reacts with bromine to give a single product 1,2-dibromoethane.
\mathrm{C_2H_4 + Br_2 \xrightarrow{CCl_4\, inert\, solvent} C_2H_4Br_2}(b) D is straight-chain butane and F is branched isobutane or 2-methylpropane. They have the same molecular formula C4H10 and are structural isomers.
(c) A, CH3COOH, and B, CH3CH2OH, undergo esterification in the presence of concentrated H2SO4 to give ethyl ethanoate, which has a fruity smell, and water.
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